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Physical exercises for preventing injuries among adult male football players:A systematic review

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Journal of Sport and Health Science 2022年第1期11卷 115-122页

作者： Jorge Pérez-Gómez JoséCarmelo Adsuar Pedro EAlcaraz Jorge carlos-vivas Health EconomyMotricity and Education(HEME)Research GroupFaculty of Sports SciencesUniversity of ExtremaduraCaceres 10003Spain UCAM Research Center for High Performance Sport Catholic University of MurciaMurcia 30107Spain Faculty of Sport Sciences Catholic University of MurciaMurcia 30107Spain

Background:Football is the most practised sport in the world and is associated with the risk of injuries in the *** studies have been published that identify injury prevention programs,but there is no review of the full body of evidence on injury prevention programs for use by football *** aim of this article was to carry out a systematic review of published studies on injury prevention programs for adult male footballers,identify points of common understanding and establish recommendations that should be considered in the design of injury prevention ***:PubMed and EMBASE databases were used to identify relevant published articles using the following keywords:"soccer"AND"injury"AND"prevention".Results:A total of 2512 studies were identified initially,but only 11 studies met the inclusion criteria,and their outcomes are *** revealed that injury prevention programs in football have focused on strength training,proprioceptive training,multicomponent programs(balance,core stability,and functional strength and mobility),and warm-up ***:Based on results from the studies analyzed,football players can lower the incidence of match and training injuries by participating in dynamic warm-up programs that include preventive exercises before games or during training sessions,and by adding strength,balance,and mobility training to the training sessions.

关键词： Balance Core stability Injury prevention programs Soccer Warm-up

Beyond cotton and polyester: An evaluation of emerging feedstocks and conversion methods for the future of fashion industry

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Journal of Bioresources and Bioproducts 2024年第2期9卷 130-159页

作者： Ryen M.Frazier Keren A.vivas Ivana Azuaje Ramon Vera Alonzo Pifano Naycari Forfora Hasan Jameel Ericka Ford Joel J.Pawlak Richard Venditti Ronalds Gonzalez Department of Forest Biomaterials North Carolina State UniversityRaleighNC 27695USA Department of Textile Engineering Chemistry and ScienceThe Nonwovens InstituteNorth Carolina State UniversityRaleighNC 27695USA

As the global population grows,the demand for textiles is increasing ***,this puts immense pressure on manufacturers to produce more *** synthetic fibers can be pro-duced cheaply,they have a negative impact on the *** the other hand,fibers from wool,sisal,fique,wood pulp(viscose),and man-made cellulose fibers(MMCFs)from cotton can-not alone meet the growing fiber demand without major stresses on land,water,and existing markets using these *** a greater emphasis on transparency and circular economy practices,there is a need to consider natural non-wood alternative sources for MMCFs to supple-ment other fiber ***,introducing new feedstocks with different compositions may require different biomass conversion ***,based on existing work,this review ad-dresses the technical feasibility of various alternative feedstocks for conversion to textile-grade ***,alternative feedstocks are introduced,and then conventional(dissolving pulp)and emerging(fibrillated cellulose and recycled material)conversion technologies are evaluated to help select the most suitable and promising processes for these emerging alternative sources of *** is important to note that for alternative feedstocks to be adopted on a meaningful scale,high biomass availability and proximity of conversion facilities are critical *** North America,soybean,wheat,rice,sorghum,and sugarcane residues are widely available and most suitable for conventional conversion through various dissolving pulp production methods(pre-hydrolysis kraft,acid sulfite,soda,SO2-ethanol-water,and potassium hydroxide)or by emerging cellulose fibrillation *** dissolving pulp conversion is well-established,fibrillated cel-lulose methods could be beneficial from cost,efficiency,and environmental ***,the authors strongly encourage more work in this growing research ***,conducting thorough cost and sustainability assessment

关键词： Non-wood Residue Regenerated cellulose Dissolving pulp Man-made cellulose fiber Apparel textile

Head geometric morphometrics of two Chagas disease vectors from Venezuela

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Zoological Systematics 2017年第1期42卷 65-70页

作者： Ana Maria Oropeza carlos Arturo Perri Fernanndez Jonathan Liria Ana Soto-vivas Escuela de Bioanalisis Facultad de Cieneias de la Salud Universidad de Carabobo Venezuela Universidad Regional Amazonica IKIAM km 7 via Muyuna Ecuador Centro de Esmdios en Zoologla Aplicada Facultad Experimental de Ciencias y Tecnologla Universidad de Carabobo Venezuela Centro de Estudios de Enfermedades Endkmicas y Salud Ambiental Institeto de Alto Estudios "Dr. Arnoldo Gabladon " Venezuela Carrera de Cs. Biologicas y Ambientales Facultad de Ciencias Biologicas Universidad Central del Ecuador Ecuador

Triatominae species are considered the main vectors of Chagas disease or American Trypanosomiasis. In Venezuela, the principal vectors are Rhodnius prolixus （Stal, 1959） and Triatoma maculata （Erichson, 1848）, which are belonged to the tribe Rhodniini and Triatomini, respectively. The head conformation and size development of these species can reflect ontogenetic changes which contribute with the vectors biology studies, as well to support of instars determination. The goal of the paper is to the application of geometric morphometric techniques for describing head conformation and size of instars of these species. We photographed 140 heads in R. prolixus： First instar （I： 16）, second instar （II： 17）, third instar （III： 18）, fourth instar （IV： 21）, fifth instar （V： 21）, adult female （F： 26） and adult males （M： 21）; in T. maculata heads of 136 specimens were photographed,I： 20, II： 17, III： 26, IV： 15, V： 19, F： 20 and M： 19. Landmark coordinate （x, y） configurations were registered and aligned by Generalized Procrustes Analysis. Covariance Analyses were implemented with proportions of re-classified groups and MANOVA. Statistical analyses of variance found not significant differences in head isometric size （Kruskal-Wallis） among IV and V instars in both species. The a posteriori re-classification was almost perfect in R. prolixus （82%） and T. maculata （86%）; the main head differences occurs in antenniferous tubercles, postocular and preocular. Our study using quantitative tools for describing the shape differences contributes to explain the morphology variability and development of Chagas disease vectors.

关键词： Instars Rhodniini Triatomini conformation centroid size.

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雷电流对潜供电弧演变影响的研究

雷电流对潜供电弧演变影响的研究

作者： HARWEY HASTERDON vivas ALBANIL 华北电力大学(北京)

学位级别：硕士

全球能源互联网的提出,使得超远距离输电技术,尤其是电能传输技术近年来在世界范围内受到广泛关注。由于长距离输电线路的电压等级商、超长的线路距离、较大的输送功率、特殊的线路结构,潜供电弧问题更加突出。如果潜供电弧不能及时熄灭... 详细信息

全球能源互联网的提出,使得超远距离输电技术,尤其是电能传输技术近年来在世界范围内受到广泛关注。由于长距离输电线路的电压等级商、超长的线路距离、较大的输送功率、特殊的线路结构,潜供电弧问题更加突出。如果潜供电弧不能及时熄灭,断路器将与电弧接地故障重合。导致单相重合故障。研究长距离输电线路潜供电弧的内部物理机制和运动现象,并在此基础上建立潜供电弧的动力学模型,分析潜供电弧的燃弧时间和空间演化特性。而有效的潜弧抑制方法可以提供重要的理论依据和技术依据。近年来,随着我国西部开发力度的加大,新疆、西藏等地区的自然资源逐步得到开发,西部能源基地逐渐形成。未来,长距离、大容量输电的需求将逐渐增加。随着科技的发展和能源的开发利用,中国未来的主要能源基地将位于西部地区。对于西部地区独特的资源属性和经济发展来说,发展燃煤工业、煤电工业、风能和太阳能的利用将成为西部地区未来发展的主要道路。因此,未来新疆、西藏等地区将有大量的电力输出,成为我国重要的发电区域。但是,它们远离国家东部和南部等能源负荷中心,距离将达到3000公里。未来,俄罗斯、蒙古等国家也可能得到发展。电力资源输送到中国,输送距离也在3000km以上。由于输电线路距离长,输电容量大,现有的普通孤岛电压输电将无法满足如此大规模的远距离输电。高低差经济。关于空气电弧的演化特性有很多研究。然而,它们大多是对低压断路器的识别,很少涉及到隔离。此外,在以前的研究中,通过MHD版本专门分析电弧演变过程,而忽略了外部电路方程。在模拟中,arc modern希望被识别并用作输入号码。因此,表征中断特性的电弧存在日和电弧时间需要通过实验获得。因此,不能通过模拟的方式来分析中断特性。本文将MHD方程和外电路方程耦合起来,形成了区域-电路耦合计算模型。在MHD模型中,还考虑了转移接触的运动方式。分别分析了交流电弧和DC电弧的演化特性。

关键词：弧链模型熄灭时间雷电流运动特性潜供电弧

Lichen species dominance and the resulting photosynthetic behavior of Sonoran Desert soil crust types(Baja California,Mexico)

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Ecological Processes 2013年第1期2卷 64-72页

作者： Burkhard Büdel Mercedes vivas Otto L Lange Plant Ecology and Systematics Biology DepartmentUniversity of KaiserslauternP.O.Box 3049D-67653KaiserslauternGermany Department of Plant Science Faculty of PharmacyUniversidad Complutense de Madrid Plaza Ramóny Cajal28040MadridSpain Julius-von-Sachs-Institut für Biowissenschaften University of WürzburgJulius-von-Sachs-Platz 3D-97082WürzburgGermany.

Introduction:Lichen dominated biological soil crusts(BSCs)occur over large areas in the Sonoran Desert of the southwestern USA and northwest *** Baja California BSCs show a distinct patchiness and several types can be *** chlorolichen-and two cyanolichen-dominated BSCs were *** hypothesize that patchiness and the resulting domination of certain functional lichen groups will result in patchiness of photosynthetic CO_(2)-uptake related to environmental factors as ***:Four different soil crust samples were placed in cuvettes and their CO_(2) exchange was recorded in an open system with an infrared gas *** blown over the BSCs had a controlled CO_(2) content of 350 *** cuvettes were operated in *** CO2 exchange was continually recorded throughout the ***:Besides the dominating chlorolichens Psora decipiens and Placidium squamulosum and the cyanolichens Peltula patellata and ***,several other lichen species and 12 cyanobacterial species were found in the biological soil crusts *** chlorolichen BSCs already gained positive net photosynthesis with high air humidity alone,while the cyanolichen types did not,but showed smaller CO_(2)-uptake depression after water *** specific net photosynthesis responses to mode of hydration and to crust water content seem to correlate with precipitation characteristics of their ***:Species specific photosynthetic performance related to activation of respiration and net photosynthesis as well as to crust water content help to explain niche occupation and species composition of *** functional types have to be considered when they have a patchy distribution.

关键词： Biological soil crust Lichens Cyanobacteria Photosy

The Superconductivity in Fe-Based Family of Superconductors and Its Electronic Structure Analysis in Presence of Dopants Rh and Pd

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Journal of Quantum Information Science 2022年第4期12卷 111-124页

作者： Ronald Columbié-Leyva Alberto López-vivas[1† ] Ulises Miranda Ilya G. Kaplan Instituto de Investigación en Materiales UNAM CDMX México Baltic Scientific Instruments Riga Latvia

The discovered in 2008 Fe-based superconductors (SC) are a paramagnetic semimetal at ambient temperature and in some cases they become superconductor upon doping. In spite of so many years since its discovery it is still not known the mechanism that leads to superconductivity. The electronic structure study is used for determining key features of the SC mechanism in these materials. The calculations were performed using the modern suite of programs MOLPRO 2021. We performed quantum calculations of a cluster embedded in a background charge distribution that represents the infinite crystal. The Natural Population Analysis was used for determining the charge and spin distribution in the studied materials. As follows from our results, the possible mechanism for superconductivity corresponds to the RVB theory proposed by Anderson for high Tc superconductivity in cuprates.

关键词： Iron-Based High-Tc Superconductors Superconductivity Embeded Cluster Method Natural Bonding Orbitals Analysis

Functional Diversity of the Fish Community Associated to Soft-Bottoms in the Lagoon of La Paz B.C.S., México

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Open Journal of Marine Science 2020年第4期10卷 233-244页

作者： Hernandez-Villasana carlos Samuel Barjau-González Emelio López-vivas Juan Manuel Armenta-Quintana José Angel Suárez-Villavicencio Jaime Departamento Académico de Ciencias Marinas y Costeras Universidad Autónoma de Baja California Sur La Paz B.C.S. México Departamento Académico de Ciencia Animal y Conservación del Hábitat Universidad Autónoma de Baja California Sur La Paz B.C.S. México Departamento Académico de Sistemas Computacionales Universidad Autónoma de Baja California Sur La Paz B.C.S. México

There has been an increase of community studies that incorporate the use of functional diversity indices. The incorporation of these indices in the analysis of marine communities is recent, however, could contribute with relevant information about the health of those communities. The lagoon of La Paz is a body of water located in La Paz, B.C.S., México. Despite its regional importance, there are not recent studies about its fish communities. Therefore, the aim of the present study was to analyze the temporal and spatial structure of the functional diversity of fish communities associated to soft bottoms, from August 2016 to July 2017, as well as important environmental variables. Functional diversity indices showed significant differences between months. Spatial analysis did not show significant differences perhaps due to low variability of the type of substrate. Temperature showed temporal differences as well. Therefore, temperature may be a limiting environmental variable for many fish species inhabiting coastal lagoons.

关键词： Coastal Lagoon Functional Diversity Functional Traits Fish Community

Duodenal biopsy may be avoided when high transglutaminase antibody titers are present

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世界胃肠病学杂志：英文版 2009年第38期15卷 4775-4780页

作者： Santiago vivas Jose G Ruiz de Morales Sabino Riestra Laura Arias Dolores Fuentes Noemi Alvarez Sara Calleja Mercedes Hernando Blanca Herrero Javier Casqueiro Luis Rodrigo Department of Gastroenterology Hospital de León Institute of Biomedicine University of León Immunology Section Hospital de León Department of Gastroenterology Hospital Universitario Central de Asturias Department of Pathology Hospital de León Department of Pediatrics Hospital de León Faculty of Biology and Environmental Sciences University of León

AIM:To evaluate the predictive value of tissue transglutaminase (tTG) antibodies for villous atrophy in adult and pediatric populations to determine if duodenal biopsy can be ***: A total of 324 patients with celiac disease (CD; 97 children and 227 adults) were recruited prospectively at two tertiary centers. Human IgA class anti-tTG antibody measurement and upper gastrointestinal endoscopy were performed at diagnosis. A second biopsy was performed in 40 asymptomatic adults on a gluten-free diet (GFD) and with normal tTG ***: Adults showed less severe histopathology (26% vs 63%, P<0.0001) and lower tTG antibody titers than children. Levels of tTG antibody correlated with Marsh type in both populations (r=0.661, P<0.0001). Multiple logistic regression revealed that only tTG antibody was an independent predictor for Marsh type 3 lesions, but clinical presentation type and age were not. A cut-off point of 30 U tTG antibody yielded the highest area under the receiver operating characteristic curve (0.854). Based on the predictive value of this cut-off point, up to 95% of children and 53% of adults would be correctly diagnosed without biopsy. Despite GFDs and decreased tTG antibody levels, 25% of the adults did not recover from villous atrophy during the second year after ***: Strongly positive tTG antibody titers might be sufficient for CD diagnosis in children. However, duodenal biopsy cannot be avoided in adults because disease presentation and monitoring are different.

关键词：转谷氨酰胺酶十二指肠抗体滴度活检

Socio-spatial organization reveals paternity and low kinship in the Honduran white bat(Ectophylla alba)in Costa Rica

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Integrative Zoology 2021年第5期16卷 646-658页

作者： Edgar G.GUTIÉRREZ Isabela vivas-TORO Daniela CARMONA-RUÍZ David VILLALOBOS-CHAVES Bernal RODRÍGUEZ-HERRERA Melina Del REAL-MONROY Gloria LEÓN-AVILA Jorge ORTEGA Laboratorio de Bioconservación y Manejo Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico Department of Biology University of WashingtonSeattleWashingtonUSA Escuela de Biología Universidad de Costa RicaSan JoséCosta Rica Laboratorio de Genómica Evolutiva Doctorado en Ciencias BásicasUniversidad Autónoma de ZacatecasZacatecasZac.México Laboratorio de Genética Posgrado en Ciencias QuimicobiológicasDepartamento de ZoologíaEscuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico

Ectophylla alba is a tent-making bat that roosts in mixed-sex clusters comprising adults and *** goal was to determine the genetic identity of individuals belonging to different roosting *** tested the hypothesis of kin selection as a major force structuring group *** used 9 microsatellites designed for *** to determine the genetic identity and probability of parentage of *** analyzed parentage and kinship using the software ML-Relate,GenAIEx,and *** obtained relationship probabilities(0.5)revealed a clear maternal relationship between female adults and offspring with allele compatibility,and at least 5 relationships between male adults and *** found a low degree of relatedness within roosting *** roosting groups at different sites,the mean probability of a half-sibling relationship ranged from 0.214 to 0.244 and,for full-sibling relationship,from 0.383 to ***,adult individuals were poorly related within clusters,and kinship as an evolutionary force could not explain group membership.

关键词： Ectophylla alba group composition kinship microsatellites relatedness